Antirattle spring device



April l15, 1930. H. E. BLOMGREN v ANTIRATTLE SPRING DEVICE Filed March 12, 1928 .e u a, 11 am il! ,w v?, 6 f

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`25 parts before use.

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Patented Apr. 15, 1930 i UNITED STATES "f i ,j 1,754,341

PArENroFFlcE N HENRY E. BLOMGREN, OF BROOKLYN, YORK 1 ANTIRATTLE SPRING- DEVICE Application filed March 12, 1928. Serial No. 261,072.

This invention has reference to the spring a resilient block that can be applied to the shackle without removal or even loosening of `the shackle bolt or bolts, and which will insure considerable pressure against the sleeves and also against the side links of the shackle. 15' `In the accompanying drawings showing embodimentso my invention `1 y Figure lis a side elevation of the device in use. j

Fig. 2 is an end View of the sameparts. Fig. 3 is a cross section on the line 3-3 of Fig. 2. i i j Fig. 4 ,-isa crosssection ofFig.1. i

Fig. 5 shows the relative of the-line 4 4 positions of `the Y Fig 6 shows the insertion of the comple` mental block sections. j

Fig. 7 shows one of the securing plates.

As shown the trame 2 is provided with the 30 usual sleeve end portion "3, that carries the pivot bolt 4. The spring 5 is provided with an eye 6, at the end engaged by the pivot bolt 7. "These bolts areconnected `by `links W8 and 9, which constitute the `usual shackle support for the spring that permits the end of the spring to move back and forth asthe spring is leXed.` g

To prevent` rattle and lost `movement at these hinge portions, I provide a block of resilient non-metallic material` such as rubber,

in two complemental portions or sections,

adapted to be clamped together -by a transverse member in the rectangular opening between the opposed links and the opposed eyes. As shown I provide a rubberblock formed of two complemental sections 10 and 11, that are similar and are brought together ontheir inner faces 12 and13, as shown, inwhich `position they forma rounded groove 14 by cutaway portions on the lower edge or side,

and asimilar roundedgroove 15 on the upper j side, by cut away portions in each section; and which grooves correspond to the eyes `3 and 6. f It will be understood` that these two complemental sections can be inserted from opposite Vsides into. the rectangular opening eyes, as indicated in Figs,h 3 and 4.

These blocks are provided with registering `between theopposed links and the opposed holesr16, 17, through whicha bolt 18, with f nut l, is passed, that willyserve to draw` the blocks together at thelmeetng faces 12 and 13;` the blocks being inserted from opposite sides, as indicated in Fig. 5, that ,will` bring the grooved ends 14 and 15 to engage the eyes 3 and 6, see Fig. Clamping plates 19 and 20, are placed on the bolt 18, at holes inthe plates, to press the sections inwardlyfandw as shown the block sections 1()` and llareprof` vided with extensions 22, 23, on the outer faces Varound the bolt holes, that are somewhat conical in form; This will cause theplates 19, 20, to first engage the sections atthe middle parts and will cause compression, that will result in outward distension of the side walls of the sections, that will thusbefpressed against the links and the eyesof the shackle,"`

Means `are further provided to `causethe side walls of the composite block to be pressed against the side links 8 and 9, as the sections are drawn together by thebolt 18; "and asshownthe side walls 24 and 25 on one side" of the composite block are inclined inwardly to the meeting faces of the sections,lto form a kind of channel; and at theopposite side of the block, the walls 26 and 27` .of the two sections arei similarly inclined inwardly to the meeting faces ofthe sections, and `form a channel.` The distance apart ofthese opposed walls of the sections that are inclined, is formed slightly greater than the distance apart of the opposed links of the shackle joint, as indicated in Fig; 6, so that when the sections are initially applied to the `shackle from opposite sides, theseinclined walls will at once engage the inner walls of the links 9 and 8. and as the bolt causes approach of the sections, obviously thesections will be compressed against the links, as indicated in Fig. 4, t-he inclined walls acting as a wedge.

This will roduce a strong outward pressure on the lin s, and prevent any possible rattle at such joints.

The pressure on the plates 19 and 20, by drawing up of the bolt 18 by its nut 1, will, by the flattening on the conical faces of the sections, cause outward distension of the sections at'all of the side edges and insure considerable pressure vo'nthe eyes 14 and 15 vby the block sections; and the edge portions'of the clamping plates will press inwardly 4on the sections at the edges and hold them in engagement with the eyes throughout the curved surfaces; which will produce friction between the block and sleeves or eyes as the shackle swings when the spring iiexes, and will-'function'as a'snubbei or shock absorber.

This invention` is an improvement on the structure set forth "in U. S. Patent No. 1,139,136' granted to me; alsothat set forth in patent granted tome October 23, 1928, No. 1,688,682.

What I`claim is 1. rlhecombination with a spring shackle formed of sideflinkstliat connect and support upper andlower sleeve members by bolts, of a lcomposite block of rubber compressed betwee'nsaid two pairs of opposed members on its four outer Vwalls respectively, 'the block being formed of "two complemental sections in engagement Onthelplane of the sleeve bolts, the composite blockl eing provided with a channel on each of two opposite sides to engage said` sleeve` respectively, "the other two opposite side walls of thecomposite block being'inclined inwardly tothe meeting faces of the sections to,A form-a. channel for engagement Witll'the s'ideA links respectivelyg'the composite block hav-ing a central transverse aperture, and abolt projectingthrough said aperture to draw the sections to ether'under compression against the said 'guur engaged walls of the shackle.

2. The combination with a spring shackle formed onsidelinksthatconnect and support uppera'ndlower sleeve members by bolts, of a 4composite. block of rubber Ycompresse-d between saidtwo .pairs of opposed members onitav four outer walls respectively, the block beingform'ed of two complemental sections in engagement `onthe plane of the sleeve bolts, the composite Vblock'being pro-videdwvith a channel on Veach oftwo opposite sides to engage said sleeves respectively, the other two opposite side walls of the composite block bemgfinclined inwardlyto the meeting faces ofthe sectionsto rform av channelfor engagement'with theside linksfrespectivelythe composite block having a central'A transverse aperture, a bolt projecting through said aperture to draw4 thesections together under com,- pression 'against the sa-id'fou'r engaged walls of the shackle, said block'inclined faces as formed being spacedap'airta greater distance than the distance apart of the links, whereby insertion of the sections from opposite sides of the shackle and drawing up of the bolt will cause said inclined faces to be consider ably compressed aga-inst the links.

3. The combination with a spring shackle formed of side links that connect and support upper and lower sleeve members by bolts, of a composite block of rubber compressed between said two pairs of opposed memberson its four outer walls respectively, the block being formed of two complemental sections in engagement on the plane of the sleeve bolts, the composite block being provided with a channel on each of two opposite sidesto engage said sleeves respectively, the other two opposite side walls of the composite block being inclined inwardly tothe meeting faces ofthe sections to form a channel for engagement -with the vside links respectively, the composite block having a central transverse aperture, a bolt projecting through said aperture to draw'the sections together under compression against the said four engaged walls of the shackle, said'sections being extended outwardly around the bolt, and an apertured plate on the bolt at each end lthat is pressed against 'said extensions to compressthe block Vsections against 'all said ei'igaged members. v

4. The combination Vwith a spring shackle formed of side links that connect and support upper and lower sleeve members by bolts, of a composite block'of Vrubber compressed beA tween said two pairs of opposed members on its four outer walls "respectively, the block being formed of two complement-al sections in engagement on the plane of the sleeve bolts, the composite block being provided` with a channel on each of two opposite sides to engage Vsaid sleeves respectively, the other two opposite side walls of the composite block being'inclined inwardly'to'the meeting faces of the sections to form a channel for engagement withv the side links respectively, the conipositeV block having a central transverse aperture, a bolt projecting through said aperture to drawthe sections togethernnder compression against all engaged wallsof the shackle, said block inclined 'faces being spaced apart. a greater distance'than the distance apart of the links, said sections being extended outwardly around the bolt, and an apertured plate on the bolt at each end portion that is pressedagainst said' extensions to compress the block sections against all said engaged members of the shackle.

5. The combination with 'a spring shackle formedv of side links that connect and support upper and lower sleeve members by bolts, of a composite block of rubber compressed between said two pairs of opposed members on its four outer walls respectively, the block being formed vof two complemental sections in engagement on the plane ofthe sleeve bolts, the composite block being provided with a channel on each of two opposite sides to engage said sleeves respectively, the other two opposite side walls of the composite block being inclined inwardly to the meeting faces of the sections to form a channel for engagement with the side links respectively, the composite block having a central transverse aperture, a bolt projecting through said aperture to draw the sections 10 together under compression against the said four engaged walls of the shackle, said sec- `tions being extended outwardly around the bolt, that will serve to compress the block sections against all said engaged members. 15 6. The combination with a spring shackle formed of side links that 'connect and support upper and lower sleeve members by olts, of a composite block of rubber compressed between said two pairs of opposed 2O members on its four outer walls respectively, `the block being formed of two complemental sections in engagement on the plane of the sleeve bolts, the composite block being pro` vided with achannel on each of two oppor site sides to engage the said sleeves respectively, the other two opposite side walls of the composite block being inclined inwardly to the meeting faces of the sections to form a channel for engagement with the side links so respectively,the composite block having a central transverse aperture, a bolt projecting through said aperture to draw the sections together under compression against the said four engaged walls of the shackle, `said block 5 inclined `faces being spaced apart a greater distance than the distance apart of the links, said sections being extended outwardly around the bolt to compress the sections against all engaged members.

l4;; Signed at New York, N. Y., on this 10thV day of March, 1928.

HENRY E. BLOMGREN. 

